Chainsaw



FIG. 1 is a top front right perspective view of a chainsaw showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left-side elevation view thereof;

FIG. 5 is a right-side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a bottom rear left perspective view thereof.

The even length broken lines are for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a chainsaw, as shown and described. 